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Type of nuclear reactor that uses normal water
The light-water reactor (LWR) is a type of thermal-neutron reactor that uses normal water, as opposed to heavy water, as both its coolant and neutron moderator;
Light-water_reactor
Type of nuclear reactor
A pressurized water reactor (PWR) is a type of light-water nuclear reactor. PWRs are the most common type of nuclear power reactor, representing almost
Pressurized_water_reactor
Nuclear reactor design
water reactor (PWR). While heavy water is very expensive to isolate from ordinary water (often referred to as light water in contrast to heavy water)
Pressurized heavy-water reactor
Pressurized_heavy-water_reactor
Nuclear reactor generating more fissile material than it consumes
attractive because they made more complete use of uranium fuel than light-water reactors, but interest declined after the 1960s as more uranium reserves were
Breeder_reactor
Type of nuclear fission reactor
streamlined construction and enhanced scalability compared to large light-water reactors. Many SMR designs are intended to be built in factories and transported
Small_modular_reactor
Device for controlled nuclear reactions
cost, fuel type, enrichment, or burnup, and the now-obsolete Light water graphite reactor. During early 1940s nuclear research, the phrase "atomic pile"
Nuclear_reactor
Concept nuclear reactor whose water operates at supercritical pressure
The supercritical water reactor (SCWR) is a concept Generation IV reactor, designed as a light water reactor (LWR) that operates at supercritical pressure
Supercritical_water_reactor
Nuclear reactor where water boils in core
A boiling water reactor (BWR) is a type of nuclear reactor used for the generation of electrical power. It is the second most common type of electricity-generating
Boiling_water_reactor
The light water graphite reactor (LWGR) is a design of nuclear reactor that uses purified graphite as a neutron moderator and light water (H2O) as a liquid
Light_water_graphite_reactor
Type of Soviet nuclear power reactor
reactor") is a class of graphite-moderated nuclear power reactor designed and built by the Soviet Union. It is somewhat like a boiling water reactor as
RBMK
Class of Indian nuclear-powered ballistic missile submarines
single seven blade propeller powered by an 82.5 MWe-rated pressurised light-water reactor (PWR) powered by highly enriched uranium fuel. and can achieve a
Arihant-class_submarine
Type of nuclear reactor cooled by molten sodium
low-pressure operation. Such reactors are capable of burning up transuranic waste products in the spent fuel of light-water reactors, significantly reducing
Sodium-cooled_fast_reactor
U.S. government research and development program
The Light Water Reactor Sustainability Program is a U.S. government research and development program. It is directed by the United States Department of
Light Water Reactor Sustainability Program
Light_Water_Reactor_Sustainability_Program
Naturally occurring uranium self-sustaining nuclear chain reactions
stopped. The reactor thus had a negative void coefficient of reactivity, something employed as a safety mechanism in human-made light water reactors. After
Natural nuclear fission reactor
Natural_nuclear_fission_reactor
Type of nuclear reactor
A heavy water reactor (HWR) is a type of nuclear reactor which uses heavy water (D2O, deuterium oxide) as a neutron moderator. It may also use this as
Heavy-water_reactor
Canadian heavy water nuclear reactor design
Canadian pressurized heavy-water reactor design used to generate electric power. The acronym refers to its deuterium oxide (heavy water) moderator and its use
CANDU_reactor
Nuclear reactor design
The advanced boiling water reactor (ABWR) is a Generation III boiling water reactor. The ABWR is currently offered by GE Vernova Hitachi Nuclear Energy
Advanced boiling water reactor
Advanced_boiling_water_reactor
Material in core during nuclear meltdown
the affected parts of the reactor, products of their chemical reaction with air, water, steam, and in the event that the reactor vessel is breached, molten
Corium_(nuclear_reactor)
Nuclear fuel cycle
weapons proliferation when used in a traditional light water reactor though not in a molten salt reactor. Concerns about the limits of worldwide uranium
Thorium_fuel_cycle
Type of nuclear reactor that uses molten material as fuel
associated with different reactor types. U-235 is the world's primary nuclear fuel and is usually used in light water reactors. U-238/Pu-239 has found the
Liquid fluoride thorium reactor
Liquid_fluoride_thorium_reactor
Material fuelling nuclear reactors
fuel pellet used in a light-water reactor produces more heat than burning one ton of coal. Nuclear fuel used in fission reactors requires a fissile material
Nuclear_fuel
Nuclear energy extracted from thorium isotopes
several other commercial reactors have been fueled using thorium, including light-water reactors and high-temperature gas-cooled reactors. The feasibility of
Thorium-based_nuclear_power
Indian nuclear reactor design
The Advanced Heavy-Water Reactor (AHWR) or AHWR-300 is an Indian Generation III+ reactor design developed by the Bhabha Atomic Research Centre and intended
Advanced_heavy-water_reactor
Reactor accident due to core overheating
available, however, the fuel will be kept cool. Before the core of a light-water nuclear reactor can be damaged, two precursor events must have already occurred:
Nuclear_meltdown
Laboratory in Idaho Falls, Idaho, United States
simulation program elements Implementing a science-based R&D program The Light Water Reactor Sustainability Program supports national efforts to do the research
Idaho_National_Laboratory
North Korean nuclear site
indigenous light water reactor nuclear power station technology. The major installations include all aspects of a Magnox nuclear reactor fuel cycle,
Nyongbyon Nuclear Scientific Research Center
Nyongbyon_Nuclear_Scientific_Research_Center
Substance that slows down particles with no electric charge
atomic nucleus. Water (sometimes called "light water" in this context) is the most commonly used moderator (roughly 75% of the world's reactors). Solid graphite
Neutron_moderator
Type of nuclear reactor, CO2 or He cooled
reactors mostly competed with light water reactors, ultimately losing out to them after having seen some deployment in Britain. Heavy water reactor share
Gas-cooled_reactor
Nuclear reactor that uses moderated neutrons
monitor and control the reactor's systems. The light-water reactor (LWR) is a type of thermal-neutron reactor that uses normal water, as opposed to , as both
Thermal-neutron_reactor
Class of nuclear reactors with improved safety over its predecessors
older Gen II reactors comprise the vast majority of current nuclear reactors. Gen III reactors are so-called advanced light-water reactors (LWRs). Gen
Generation_III_reactor
Nuclear research facility in Mumbai, India
was India's first nuclear reactor built at BARC in 1956 to conduct basic research in nuclear physics. It is 1 MWTh light water cooled and moderated swimming
Bhabha_Atomic_Research_Centre
Nuclear reactor where the coolant is liquid metal
at low pressure, SGRs avoid the expensive reactor pressure vessel and piping systems of light-water reactors. They also feature a strong, prompt negative
Liquid_metal_cooled_reactor
nuclear power stations List of boiling water reactors List of largest power stations List of small modular reactor designs List of nuclear reprocessing
List of commercial nuclear reactors
List_of_commercial_nuclear_reactors
nuclear reactor program, including the construction of a 200 MWe power reactor at Taechon, in exchange for the construction of two 1000-MWe light-water reactors
Nuclear_power_in_North_Korea
New nuclear reactor technologies under development
fast reactor (GFR), the lead-cooled fast reactor (LFR), the molten salt reactor (MSR), the sodium-cooled fast reactor (SFR), the supercritical-water-cooled
Generation_IV_reactor
Nuclear reactor design
The integral fast reactor (IFR), originally the advanced liquid-metal reactor (ALMR), is a design for a nuclear reactor using fast neutrons and no neutron
Integral_fast_reactor
1994 nuclear agreement between the United States and North Korea
nuclear power plant program with more nuclear proliferation resistant light water reactor power plants, and the step-by-step normalization of relations between
Agreed_Framework
Nuclear reactor cooled or moderated by an organic liquid
points and low vapor pressures, allowing reactor operation at temperatures comparable to light-water reactors without requiring high pressure. Nuclear
Organic_nuclear_reactor
Type of nuclear reactor cooled by molten material
to a liquid metal cooled reactor than to a conventional light water cooled reactor. MSR designs are often breeding reactors with a closed fuel cycle—as
Molten-salt_reactor
Idaho National Laboratory research neutron source
accelerating the nuclear conditions. The ATR is a pressurized light water reactor (LWR), using water as both coolant and moderator. The core is surrounded by
Advanced_Test_Reactor
Topics referred to by the same term
Earth Water, especially water that is not heavy water Water, the coolant in a light-water reactor, a type of nuclear reactor Lightwater, a town in Surrey
Light_water
Emergency shutdown of a nuclear reactor
commercial reactor operations, this type of shutdown is often referred to as a "scram" at boiling water reactors and a "reactor trip" at pressurized water reactors
Scram
Type of nuclear power reactor
Reduced-Moderation Water Reactor (RMWR), also referred to as the Resource-renewable BWR, is a proposed type of light water-moderated nuclear power reactor, featuring
Reduced moderation water reactor
Reduced_moderation_water_reactor
Type of British nuclear reactor
advantage. Like the magnox, CANDU, IPHWR, and RBMK reactors, and in contrast to light water reactors, AGRs are designed to be refuelled without being shut
Advanced_gas-cooled_reactor
Arihant-class nuclear submarine
The boat will have one seven-blade propeller powered by a Compact Light Water Reactor (CLWR). It can achieve a maximum speed of 12–15 knots (22–28 km/h)
INS_Aridhaman
regarding large light water reactors in the 1,000 MWe to 1,250 MWe range and those of private industrial companies pursuing small modular reactors for deployment
Nuclear_power_in_Poland
Uranium processed to increase the percentage of uranium-235
containing less than 20% 235U, is used as fuel in light-water reactors, which make up most nuclear power reactors worldwide. Highly enriched uranium (HEU), containing
Enriched_uranium
Nuclear reactor where fast neutrons maintain a fission chain reaction
A fast-neutron reactor (FNR) or fast-spectrum reactor or simply a fast reactor is a category of nuclear reactor in which the fission chain reaction is
Fast-neutron_reactor
Nuclear reactor design
Boiling Water Reactor (ESBWR) is a passively safe generation III+ reactor design derived from its predecessor, the Simplified Boiling Water Reactor (SBWR)
Economic Simplified Boiling Water Reactor
Economic_Simplified_Boiling_Water_Reactor
Light water reactor in Prague, Czech Republic
The VR-1 training reactor is a zero power pool-type light water reactor. It is located at the Czech Technical University in Prague. Its layout enables
Training_Reactor_VR-1
Topics referred to by the same term
LWR is the light water reactor, a reactor used to generate nuclear power. LWR may also refer to: Livestock water recycling, a Canadian environmental company
LWR_(disambiguation)
1986 nuclear accident in the Soviet Union
it to re-enter the core at close to boiling point. Unlike other light-water reactor designs, the RBMK design had a positive void coefficient, meaning
Chernobyl_disaster
Tokamak
can be produced under lab conditions using heavy water reactors, accelerators and light water reactors, the present amount of tritium being produced internationally
China Fusion Engineering Test Reactor
China_Fusion_Engineering_Test_Reactor
Kinetic energy of an unbound neutron
temperature neutron moderator is used for this process. In reactors, heavy water, light water, or graphite are typically used to moderate neutrons. A fast
Neutron_temperature
Chinese nuclear reactor type
CAP1400, later renamed Guohe One, is a Chinese Generation III+ reactor Pressurized water reactor developed by the State Power Investment Corporation. It was
CAP1400
Power generated from nuclear reactions
2006-11-09. "STR (Submarine Thermal Reactor) in "Reactors Designed by Argonne National Laboratory: Light Water Reactor Technology Development"". U.S. Department
Nuclear_power
Arihant-class nuclear submarine
The boat will have one seven-blade propeller powered by a Compact Light Water Reactor (CLWR). It can achieve a maximum speed of 12–15 knots (22–28 km/h)
INS_Arisudan
Soviet / Russian nuclear reactor type
The water-water energetic reactor (WWER), or VVER (from Russian: водо-водяной энергетический реактор (ВВЭР), romanized: vodo-vodyanoi enyergeticheskiy
VVER
Type of very-high-temperature reactor
A pebble-bed reactor (PBR) is a type of nuclear reactor where the nuclear fuel is contained within a bed of pyrolytic graphite spheres (pebbles), with
Pebble-bed_reactor
Swedish company
vendor-independent software for reactor analysis. Studsvik software has been used throughout the world for light water reactor core design, analysis, and operational
Studsvik
American nuclear technology company
tall reactor vessel that relies on conventional cooling methods. The modules run on low enriched uranium fuel assemblies based on existing light water reactor
NuScale_Power
Proposed small modular reactor
pressurized water reactor (light water reactor) concept. In March 2017, Bechtel withdrew from the joint venture and the project was terminated. The reactor was
B&W_mPower
Decommissioned experimental pressurized water reactor in South Carolina, US
Carolinas–Virginia Tube Reactor (CVTR), also known as Parr Nuclear Station, was an experimental pressurized tube heavy water nuclear power reactor at Parr, South
Carolinas–Virginia Tube Reactor
Carolinas–Virginia_Tube_Reactor
Planned class of Ballistic missile submarines
deployed in 2021. The Arihant-class submarine has limitations with its reactor and payload capacity. Around 2012, with the S5 project remaining in developmental
S5-class_submarine
Process of manufacturing and using nuclear fuel
graphite as the moderator can operate using natural uranium. A light water reactor (LWR) uses water in the form that occurs in nature, and requires fuel enriched
Nuclear_fuel_cycle
Coolant in a nuclear reactor
radioactivity from the reactor. Almost all currently operating nuclear power plants are light water reactors using ordinary water under high pressure as
Nuclear_reactor_coolant
Type of nuclear reactor
nuclear reactor in which soluble nuclear salts (usually uranium sulfate or uranium nitrate) are dissolved in water. The fuel is mixed with heavy or light water
Aqueous_homogeneous_reactor
Type of British nuclear reactor
natural uranium fuel, in contrast with the more common commercial light-water reactor which requires slightly enriched uranium. Graphite oxidises readily
Magnox
Nuclear reactor design
timescales. The fuel design is a hybrid between light water reactor fuel assemblies and traditional molten salt reactor approaches, in which the fuel is mixed
Stable_salt_reactor
Form of water
although “light water” is also used in nuclear engineering to refer to ordinary water used in light-water reactors. Deuterium-depleted water has less deuterium
Deuterium-depleted_water
Safety system in nuclear reactors
reactor, the core continues to produce decay heat due to the nuclear decay of fission products created during reactor operation. In a boiling-water or
Residual_heat_removal_system
Process of extraction of uranium ore from the ground
research reactors require uranium enrichment, which raises the content of 235 U from the natural 0.72% to 3–5% (for use in light water reactors) or even
Uranium_mining
State of a nuclear reactor with fission slowed or halted
pump water at atmospheric pressure, and the reactor vessel remains below 93 °C (200 °F). This temperature is so low that the cooling water in a light-water
Shutdown_(nuclear_reactor)
Energy Innovation Hub
Consortium for the Advanced Simulation of Light Water Reactors (CASL) is an Energy Innovation Hub sponsored by United States Department of Energy (DOE)
Consortium for the Advanced Simulation of Light Water Reactors
Consortium_for_the_Advanced_Simulation_of_Light_Water_Reactors
Venezuelan nuclear reactor
material testing reactor (MTR) with a capacity of 3 megawatts of thermal power. It contained 20% enriched uranium as core fuel and used light water as both coolant
RV-1_nuclear_reactor
Organization
activity was to construct two light water reactor nuclear power plants in North Korea to replace North Korea's Magnox type reactors. The original target year
Korean Peninsula Energy Development Organization
Korean_Peninsula_Energy_Development_Organization
Family of nuclear research reactors
beryllium plates in a tray on top of the core. The reactor core sits in a pool of regular light-water, 2.5 metres (8 ft 2 in) in diameter by 6 metres (20 ft)
SLOWPOKE_reactor
Heat generated from radioactive decay
even major core structural damage (meltdown) in a light water reactor or liquid metal fast reactor. Chemical species released from the damaged core material
Decay_heat
Type of nuclear reactor cooled by a gas
unsuitable in light water reactor designs and breed fuel. Because of these properties, once the initial loading of fuel has been applied into the reactor, the
Gas-cooled_fast_reactor
Nuclear power plant component
classifications are: Light-water reactor - Includes the pressurized water reactor and the boiling water reactor. Most nuclear power reactors are of this type
Reactor_pressure_vessel
Chamber containing a fluid under pressure
the possibility for gas products to build up and rupture as in a light water reactor. Robert O. Woods (April 2005). "Organic Developments". Mechanical
Plenum_chamber
Research nuclear reactor in Australia
The reactor core consists of 16 low-enriched plate-type fuel assemblies and is located under 13 metres (43 ft) of water in an open pool. Light water (normal
Open-pool Australian lightwater reactor
Open-pool_Australian_lightwater_reactor
United States atomic electricity plant (1957–1982)
final core used at Shippingport was an experimental, light water moderated, thermal breeder reactor. It kept the same seed-and-blanket design, but the seed
Shippingport Atomic Power Station
Shippingport_Atomic_Power_Station
92-proton element with the same mix of isotopes as found in nature, i.e. unenriched
and light water reactors require a concentration of roughly 3% uranium-235. Unenriched natural uranium is appropriate fuel for a heavy-water reactor, like
Natural_uranium
American nuclear technology company
1960s, it got involved in constructing and building the first boiling water reactor (BWR). The research into the project continued for the next 50 years
GE Vernova Hitachi Nuclear Energy
GE_Vernova_Hitachi_Nuclear_Energy
In a boiling water reactor (BWR), the emergency core cooling system (ECCS) injects liquid water into the reactor core from the top. Water vapor produced
Flooding (nuclear reactor core)
Flooding_(nuclear_reactor_core)
IRR-1, a small 5 MW open pool light water reactor exists at the Soreq Nuclear Research Center in central Israel. This reactor operates under the safeguards
Nuclear_power_in_Israel
American nuclear fuel supply company
percent level found in low-enriched uranium that is used in existing light-water reactors. The Energy Policy Act of 1992 created the United States Enrichment
Centrus_Energy
American nuclear power plant
and sold by Westinghouse Electric Company. The plant is a pressurized water reactor with improved use of passive nuclear safety and many design features
AP1000
Indian class of nuclear-powered attack submarines under development
submarine will take 10–12 years to be launched with a 190 MW pressurised light-water reactor and a displacement of almost 10,000-tonnes. The maximum speed will
Project_77-class_submarine
British nuclear energy company (e. 2022)
feature a hybrid approach whereby fuel assemblies similar to current light water reactors containing the liquid salt fuel mixture are submerged in a pool of
MoltexFLEX,_Ltd.
Type of nuclear fission reactor
depleted uranium, natural uranium, thorium, spent fuel removed from light water reactors, or some combination of these materials. The concept is still in
Traveling_wave_reactor
interval, producing 385 MWt and about 125 MWe. The 125 MWe pressurised water reactor (PWR) is also referred to as the Linglong One and is designed for multiple
List of small modular reactor designs
List_of_small_modular_reactor_designs
NFPA 805: Performance-Based Standard for Fire Protection for Light Water Reactor Electric Generating Plants is a safety standard introduced in 2001 by
NFPA_805
the establishment of two VVER 1000 MW reactors (water-cooled water-moderated light water power reactors) at Koodankulam in Tamil Nadu. A 2008 agreement
Nuclear_power_in_India
Nuclear power plant design
lower for light-water SMRs. In other words, water-cooled power reactors generate 32–34 watts of electricity for every 100 watts of reactor power. The
Integral_Molten_Salt_Reactor
Chemical element with atomic number 94 (Pu)
potential to interfere with long-term operation of a light water reactor. Plutonium recovered from spent reactor fuel poses little proliferation hazard, because
Plutonium
Nuclear power plant
plant and the second CANDU (CANada Deuterium Uranium) pressurised heavy water reactor. Its success was a major milestone and marked Canada's entry into the
Douglas Point Nuclear Generating Station
Douglas_Point_Nuclear_Generating_Station
reactors are a type of pressurized heavy-water reactor (PHWR) of domestic design, the CANDU reactor. CANDU reactors have been exported to India, Pakistan
Nuclear_power_in_Canada
Arihant-class nuclear submarine
The boat will have one seven-blade propeller powered by a Compact Light water reactor (CLWR). It can achieve a maximum speed of 12–15 knots (22–28 km/h)
INS_Arighaat
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